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Cumberland monkeyface pearly mussel
The Cumberland monkeyface pearly mussel or Cumberland monkeyface, scientific name ''Quadrula intermedia'', is a species of freshwater mussel in the family Unionidae, the river mussels. This aquatic bivalve mollusk is native to Tennessee and Virginia in the United States, where it occurs in the Duck and Powell Rivers.〔USFWS. (''Quadrula intermedia'' Five-year Review. ) July 2011.〕 It is a federally listed endangered species.
This species is yellow-green or greenish yellow in color.〔(''Quadrula intermedia''. ) The Nature Conservancy.〕 It can reach at least 35 years old.〔 Like other mussels, it has larvae called glochidia that lodge in the gills of fish to develop into juvenile mussels. Hosts for this species include the streamlined chub (''Erymystax dissimilis'') and blotched chub (''Erymystax insignis'').〔
This mussel has been extirpated from the Elk River. There is still a population in the Powell River, and the population in the Duck River appears to be viable.〔
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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